On Fri, 07 Jan 2011 19:29:17 -0500, Pete wrote:

On 1/7/2011 6:49 PM, Pete wrote:
On 1/7/2011 6:27 PM, Country wrote:
On Jan 7, 5:24 pm, wrote:
I'm baffled. Kitchen sink backed up yesterday, so I removed the kitchen
disposal to snake the pipe. I also disconnected the pipe in the basement
(where I have a rubber boot connector to plastic pipe that's fortunately
runs over my wash basin). So I've got a run of only about 6 or 7 feet of
pipe that I snaked. Snaking went easy, with the cable end coming out the
end of the pipe with very little gunk. So, I pour water down the pipe
under the sink and it just trickles out in the basement! I've snaked it
3 more times, and still the water flow out the end of the pipe in the
basement is about a quart every 10 minutes. Any ideas?


Ventilation?

-C-
Showing my ignorance here, but I'm not sure. The pipe goes in the wall
and behind cabinet a foot or so and down from there. The bathroom's
right above the kitchen, so it's possible there's a vent pipe that ties
to the bathroom. Just guessing.

I don't know if this is related to your problem, or not, but every
fixture in your house has a vent to the roof. They combine the
fixtures in one bathroom, and for this reason and others try to put
the various sinks, toilets, showers on top of each other, so that most
houses only need one or two such vents. That's why you have those two
little pipes coming out of your roof. They are not chimneys for the
mice's fireplace, like so many people think.

Showing my ignorance here again, but even if there was no vent pipe, I
don't understand how that could be a factor in this case. I've removed
the p-trap. I would think that with the pipe under the sink wide open,
lack of a vent pipe wouldn't impede the water flow.

I see in a later post that you pour the water in when the pipe is
disconnected and there is no trap between the pipe and where you put
the water in. I guess that should duplicate the purpose of the vent
and it's not the vent.